Nutrition that certain living organisms perform at the expense of their less useful organs as a means of survival in the face of prolonged fasting Autophagy is a highly preserved catabolic process in eukaryotes, in which cytoplasm, including excess or aberrant organelles are abducted into double membrane vesicles and released into the lysosome/vacuole for decomposition and eventual recycling of the resulting macromolecules. It is the medical way of calling the process of being nourished by food or energy reserves that are held after a prolonged fast. Expenditure or consumption of energy reserves .
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